# -*- coding: utf-8 -*-
from __future__ import unicode_literals

from django.shortcuts import render, get_object_or_404
from django.http import HttpResponse, Http404, HttpResponseRedirect
from django.template import loader
from django.urls import reverse
from django.views import generic

from .models import Question, Choice

# Create your views here.

class IndexView(generic.ListView):
    template_name = 'polls/index.html'
    context_object_name = 'latest_question_list'

    def get_queryset(self):
        """Return the last five published questions."""
        return Question.objects.order_by('-pub_data')[:5]

class DetailView(generic.DetailView):
    template_name = 'polls/detail.html'
    model = Question




class ResultsView(generic.DetailView):
    model = Question
    template_name = 'polls/results.html'



def vote(request, question_id):
    question = get_object_or_404(Question, pk=question_id)
    try:
        selected_choice = question.choice_set.get(pk=request.POST['choice'])
    except(KeyError, Choice.DoesNotExist):
        return render(request, 'polls/detail.html', {
            'question'  : question,
            'error_message':'You do not select a choice',
        })
    else:
        selected_choice.votes += 1
        selected_choice.save()
        return HttpResponseRedirect(reverse('polls:results', args=(question_id,)))






